Middle Thompson Lake fishing: Rainbow Trout, Largemouth Bass, Cutthroat Trout

Target species: Rainbow Trout, Largemouth Bass, Cutthroat Trout, Brook Trout, Brown Trout

The lake

Middle Thompson Lake covers 583 acres in Montana, across Lincoln County. It is a lake: 91.7% of it is 100 feet deep or less; the deepest point measured is at least 160 feet (48.8 m). Our records hold 9 species for this water.

Depth and bottom

Deepest measured point: at least 160 ft (48.8 m). That is the deepest contour line: the bottom goes deeper. 91.7% of the water is 100 feet or shallower. We hold 49 depth contour lines for this water.

  • 0–10 ft: 7% of the water
  • 10–20 ft: 9.3% of the water
  • 20–30 ft: 9.4% of the water
  • 30–40 ft: 9.6% of the water
  • 40–50 ft: 10.1% of the water
  • 50–60 ft: 8.7% of the water
  • 60–70 ft: 8.8% of the water
  • 70–80 ft: 11.7% of the water
  • 80–90 ft: 10% of the water
  • 90–100 ft: 7.1% of the water
  • 100–110 ft: 2.9% of the water
  • 110–120 ft: 2% of the water
  • 120–130 ft: 1.5% of the water
  • 130–140 ft: 1% of the water
  • 140–150 ft: 0.8% of the water
  • 150–160 ft: 0.1% of the water

5 target fish, led by Rainbow Trout

  • Rainbow Trout — Feeding water: 50–65°F.
  • Largemouth Bass — Feeding water: 65–85°F.
  • Cutthroat Trout — Feeding water: 50–65°F.
  • Brook Trout — Feeding water: 50–65°F.
  • Brown Trout — Feeding water: 50–65°F.

Also recorded here: Northern Pike, Lake Trout, Yellow Perch, Pumpkinseed.

Aerial imagery: USDA NAIP 2021
USDA Farm Service Agency, NAIP 2021 aerial imagery (USGS The National Map) · Public domain

Stocking: 3,040,650 fish, 1988–2025

Montana Fish, Wildlife & Parks records list 3,040,650 fish released into this water from 1988 to 2025.

  • Rainbow Trout: 1,243,291 in 1998–2025
  • Cutthroat Trout: 1,236,116 in 1936–1969
  • Brook Trout: 43,550 in 1946–1949
  • Largemouth Bass: 32,600 in 1991
  • Brown Trout: 18,594 in 1990–2000

3 more species on the stocking list.

Where this data comes from

  • Montana Fish, Wildlife & Parks — Montana Fish, Wildlife & Parks: depth contours: class A, a survey of the bottom.
  • Webster, K.E., McCullough, I.M., Soranno, P.A. LAGOS-US DEPTH v1.0, EDI, doi:10.6073/pasta/64ddc4d04661d9aef4bd702dc5d8984f (CC BY 4.0); Cheruvelil et al. LAGOS-US LOCUS v1.0 (EDI) — LAGOS-US DEPTH v1.0: Lake depth for 17,675 lakes in the conterminous U.S.: class B, a depth figure measured and published by an agency, without a bottom map.